I have an executable that I need to take input from a .wav file on my desktop. The executable expects input on stdin.
Let us use the example:
/Users/tomcruise/Desktop/executable
/Users/tomcruise/Desktop/music.wav
I am using Mac OS X.
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1This is not really a programming question and you've already been given two examples of how to do this in response to your previous question: Passing a URL to a specific piece of example code which extracts samples from a WAV file.Paul R– Paul R2011-02-09 15:57:37 +00:00Commented Feb 9, 2011 at 15:57
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@ Paul R. I just thought it would be better to specify this detail in a new question, especially since the last one was more about that specific piece of code. No one searching for the above answer would have found it in the previous thread. Likewise, I could have been possibly a bit more patient in getting my response from the original query. My apologies. What is the protocol for a proper reaction to a negative voting? In other words, what should I now do about this blemish on my reputation? :)Eric Brotto– Eric Brotto2011-02-09 16:04:18 +00:00Commented Feb 9, 2011 at 16:04
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1@Eric: (a) it's not a programming question (belongs on superuser.com) and (b) you already had all the information you needed from the previous question (see comments below the answers you were given).Paul R– Paul R2011-02-09 16:05:30 +00:00Commented Feb 9, 2011 at 16:05
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@Eric: you have now accepted an answer which isn't even correct (not really the answerer's fault - the question is unclear) - you should probably fix this otherwise someone else reading this question will be misled.Paul R– Paul R2011-02-09 16:23:53 +00:00Commented Feb 9, 2011 at 16:23
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@Paul. Sorry about all the confusion. And thanks for putting in all the effort :)Eric Brotto– Eric Brotto2011-02-09 16:35:06 +00:00Commented Feb 9, 2011 at 16:35
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4 Answers
Open Terminal and do the following:
$ cd /Users/tomcruise/Desktop
$ ./executable < music.wav
2 Comments
Eric Brotto
Correct me if I'm wrong, but shouldn't it be ./executable. I think you missed out on the ./
Paul R
Thanks, yes, it depends on your
PATH, that would be better in the general case - I've updated the answer now.What exactly is your question? stdin is not the same as command line arguments. The latter is a file descriptor that is available to the program on startup. The latter are a bunch of strings available as strings. Running
/Users/tomcruise/Desktop/executable /Users/tomcruise/Desktop/music.wav
will "give" the music.wav filename to your executable which you can process.
1 Comment
Paul R
His executable takes input from stdin
If your executable is taking from command line arguments, it would be:
/Users/tomcruise/Desktop/executable /Users/tomcruise/Desktop/music.wav
If it is taking from stdin, it would be:
/Users/tomcruise/Desktop/executable < /Users/tomcruise/Desktop/music.wav
Comments
You write the argument just after the filename:
cd /Users/tomcruise/Desktop
./executable music.wav
1 Comment
Paul R
His executable takes input from stdin